package com.mmall.concurrency.example.atomic;

import com.mmall.concurrency.annoations.ThreadSafe;
import lombok.Getter;
import lombok.extern.slf4j.Slf4j;

import java.util.concurrent.atomic.AtomicIntegerFieldUpdater;
import java.util.concurrent.atomic.AtomicReference;

/**
 * @NotThreadSafe 表示此类为线程非安全类
 */
@Slf4j
@ThreadSafe
public class AtomicExample5 {

    private static AtomicIntegerFieldUpdater<AtomicExample5> updater = AtomicIntegerFieldUpdater.newUpdater(AtomicExample5.class,"count");

    @Getter
    public volatile int count = 100;

    private static AtomicExample5 example5 = new AtomicExample5();
    public static void main(String[] args) {

        if(updater.compareAndSet(example5,100,120))
        {
            log.info("update success,{}",example5.getCount());
        }

        if(updater.compareAndSet(example5,100,120))
        {
            log.info("update if,{}",example5.getCount());
        }else
        {
            log.info("update else,{}",example5.getCount());
        }
    }
}
